123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389 |
- /*
- * Copyright (c) 2013 Oka Motofumi (chikuzen.mo at gmail dot com)
- * Copyright (c) 2016 Paul B Mahol
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- #include "libavutil/imgutils.h"
- #include "libavutil/pixdesc.h"
- #include "libavutil/opt.h"
- #include "avfilter.h"
- #include "formats.h"
- #include "internal.h"
- #include "video.h"
- #include "framesync.h"
- #define OFFSET(x) offsetof(HysteresisContext, x)
- #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
- typedef struct HysteresisContext {
- const AVClass *class;
- FFFrameSync fs;
- int planes;
- int threshold;
- int width[4], height[4];
- int nb_planes;
- int depth;
- uint8_t *map;
- uint32_t *xy;
- int index;
- void (*hysteresis)(struct HysteresisContext *s, const uint8_t *bsrc, const uint8_t *osrc, uint8_t *dst,
- ptrdiff_t blinesize, ptrdiff_t olinesize,
- ptrdiff_t destlinesize,
- int w, int h);
- } HysteresisContext;
- static const AVOption hysteresis_options[] = {
- { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
- { "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS },
- { NULL }
- };
- static int query_formats(AVFilterContext *ctx)
- {
- static const enum AVPixelFormat pix_fmts[] = {
- AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
- AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
- AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
- AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
- AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
- AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
- AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
- AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
- AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
- AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
- AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
- AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
- AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
- AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
- AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
- AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
- AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
- AV_PIX_FMT_NONE
- };
- return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
- }
- static int process_frame(FFFrameSync *fs)
- {
- AVFilterContext *ctx = fs->parent;
- HysteresisContext *s = fs->opaque;
- AVFilterLink *outlink = ctx->outputs[0];
- AVFrame *out, *base, *alt;
- int ret;
- if ((ret = ff_framesync_get_frame(&s->fs, 0, &base, 0)) < 0 ||
- (ret = ff_framesync_get_frame(&s->fs, 1, &alt, 0)) < 0)
- return ret;
- if (ctx->is_disabled) {
- out = av_frame_clone(base);
- if (!out)
- return AVERROR(ENOMEM);
- } else {
- int p;
- out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
- if (!out)
- return AVERROR(ENOMEM);
- av_frame_copy_props(out, base);
- for (p = 0; p < s->nb_planes; p++) {
- if (!((1 << p) & s->planes)) {
- av_image_copy_plane(out->data[p], out->linesize[p], base->data[p], base->linesize[p],
- s->width[p], s->height[p]);
- continue;
- } else {
- int y;
- for (y = 0; y < s->height[p]; y++) {
- memset(out->data[p] + y * out->linesize[p], 0, s->width[p]);
- }
- }
- s->index = -1;
- memset(s->map, 0, s->width[0] * s->height[0]);
- memset(s->xy, 0, s->width[0] * s->height[0] * 4);
- s->hysteresis(s, base->data[p], alt->data[p],
- out->data[p],
- base->linesize[p], alt->linesize[p],
- out->linesize[p],
- s->width[p], s->height[p]);
- }
- }
- out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
- return ff_filter_frame(outlink, out);
- }
- static int passed(HysteresisContext *s, int x, int y, int w)
- {
- return s->map[x + y * w];
- }
- static void push(HysteresisContext *s, int x, int y, int w)
- {
- s->map[x + y * w] = 0xff;
- s->xy[++s->index] = (uint16_t)(x) << 16 | (uint16_t)y;
- }
- static void pop(HysteresisContext *s, int *x, int *y)
- {
- uint32_t val = s->xy[s->index--];
- *x = val >> 16;
- *y = val & 0x0000FFFF;
- }
- static int is_empty(HysteresisContext *s)
- {
- return s->index < 0;
- }
- static void hysteresis8(HysteresisContext *s, const uint8_t *bsrc, const uint8_t *asrc,
- uint8_t *dst,
- ptrdiff_t blinesize, ptrdiff_t alinesize,
- ptrdiff_t dlinesize,
- int w, int h)
- {
- const int t = s->threshold;
- int x, y;
- for (y = 0; y < h; y++) {
- for (x = 0; x < w; x++) {
- if ((bsrc[x + y * blinesize] > t) && (asrc[x + y * alinesize] > t) && !passed(s, x, y, w)) {
- int posx, posy;
- dst[x + y * dlinesize] = asrc[x + y * alinesize];
- push(s, x, y, w);
- while (!is_empty(s)) {
- int x_min, x_max, y_min, y_max, yy, xx;
- pop(s, &posx, &posy);
- x_min = posx > 0 ? posx - 1 : 0;
- x_max = posx < w - 1 ? posx + 1 : posx;
- y_min = posy > 0 ? posy - 1 : 0;
- y_max = posy < h - 1 ? posy + 1 : posy;
- for (yy = y_min; yy <= y_max; yy++) {
- for (xx = x_min; xx <= x_max; xx++) {
- if ((asrc[xx + yy * alinesize] > t) && !passed(s, xx, yy, w)) {
- dst[xx + yy * dlinesize] = asrc[xx + yy * alinesize];
- push(s, xx, yy, w);
- }
- }
- }
- }
- }
- }
- }
- }
- static void hysteresis16(HysteresisContext *s, const uint8_t *bbsrc, const uint8_t *aasrc,
- uint8_t *ddst,
- ptrdiff_t blinesize, ptrdiff_t alinesize,
- ptrdiff_t dlinesize,
- int w, int h)
- {
- const uint16_t *bsrc = (const uint16_t *)bbsrc;
- const uint16_t *asrc = (const uint16_t *)aasrc;
- uint16_t *dst = (uint16_t *)ddst;
- const int t = s->threshold;
- int x, y;
- blinesize /= 2;
- alinesize /= 2;
- dlinesize /= 2;
- for (y = 0; y < h; y++) {
- for (x = 0; x < w; x++) {
- if ((bsrc[x + y * blinesize] > t) && (asrc[x + y * alinesize] > t) && !passed(s, x, y, w)) {
- int posx, posy;
- dst[x + y * dlinesize] = asrc[x + y * alinesize];
- push(s, x, y, w);
- while (!is_empty(s)) {
- int x_min, x_max, y_min, y_max, yy, xx;
- pop(s, &posx, &posy);
- x_min = posx > 0 ? posx - 1 : 0;
- x_max = posx < w - 1 ? posx + 1 : posx;
- y_min = posy > 0 ? posy - 1 : 0;
- y_max = posy < h - 1 ? posy + 1 : posy;
- for (yy = y_min; yy <= y_max; yy++) {
- for (xx = x_min; xx <= x_max; xx++) {
- if ((asrc[xx + yy * alinesize] > t) && !passed(s, xx, yy, w)) {
- dst[xx + yy * dlinesize] = asrc[xx + yy * alinesize];
- push(s, xx, yy, w);
- }
- }
- }
- }
- }
- }
- }
- }
- static int config_input(AVFilterLink *inlink)
- {
- AVFilterContext *ctx = inlink->dst;
- HysteresisContext *s = ctx->priv;
- const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
- int vsub, hsub;
- s->nb_planes = av_pix_fmt_count_planes(inlink->format);
- hsub = desc->log2_chroma_w;
- vsub = desc->log2_chroma_h;
- s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
- s->height[0] = s->height[3] = inlink->h;
- s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
- s->width[0] = s->width[3] = inlink->w;
- s->depth = desc->comp[0].depth;
- if (desc->comp[0].depth == 8)
- s->hysteresis = hysteresis8;
- else
- s->hysteresis = hysteresis16;
- s->map = av_calloc(inlink->w, inlink->h * sizeof (*s->map));
- if (!s->map)
- return AVERROR(ENOMEM);
- s->xy = av_calloc(inlink->w, inlink->h * sizeof(*s->xy));
- if (!s->xy)
- return AVERROR(ENOMEM);
- return 0;
- }
- static int config_output(AVFilterLink *outlink)
- {
- AVFilterContext *ctx = outlink->src;
- HysteresisContext *s = ctx->priv;
- AVFilterLink *base = ctx->inputs[0];
- AVFilterLink *alt = ctx->inputs[1];
- FFFrameSyncIn *in;
- int ret;
- if (base->format != alt->format) {
- av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
- return AVERROR(EINVAL);
- }
- if (base->w != alt->w || base->h != alt->h) {
- av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
- "(size %dx%d) do not match the corresponding "
- "second input link %s parameters (size %dx%d)\n",
- ctx->input_pads[0].name, base->w, base->h,
- ctx->input_pads[1].name,
- alt->w, alt->h);
- return AVERROR(EINVAL);
- }
- outlink->w = base->w;
- outlink->h = base->h;
- outlink->sample_aspect_ratio = base->sample_aspect_ratio;
- outlink->frame_rate = base->frame_rate;
- if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
- return ret;
- in = s->fs.in;
- in[0].time_base = base->time_base;
- in[1].time_base = alt->time_base;
- in[0].sync = 1;
- in[0].before = EXT_STOP;
- in[0].after = EXT_INFINITY;
- in[1].sync = 1;
- in[1].before = EXT_STOP;
- in[1].after = EXT_INFINITY;
- s->fs.opaque = s;
- s->fs.on_event = process_frame;
- ret = ff_framesync_configure(&s->fs);
- outlink->time_base = s->fs.time_base;
- return ret;
- }
- static int activate(AVFilterContext *ctx)
- {
- HysteresisContext *s = ctx->priv;
- return ff_framesync_activate(&s->fs);
- }
- static av_cold void uninit(AVFilterContext *ctx)
- {
- HysteresisContext *s = ctx->priv;
- ff_framesync_uninit(&s->fs);
- av_freep(&s->map);
- av_freep(&s->xy);
- }
- FRAMESYNC_DEFINE_CLASS(hysteresis, HysteresisContext, fs);
- static const AVFilterPad hysteresis_inputs[] = {
- {
- .name = "base",
- .type = AVMEDIA_TYPE_VIDEO,
- .config_props = config_input,
- },
- {
- .name = "alt",
- .type = AVMEDIA_TYPE_VIDEO,
- },
- { NULL }
- };
- static const AVFilterPad hysteresis_outputs[] = {
- {
- .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .config_props = config_output,
- },
- { NULL }
- };
- AVFilter ff_vf_hysteresis = {
- .name = "hysteresis",
- .description = NULL_IF_CONFIG_SMALL("Grow first stream into second stream by connecting components."),
- .preinit = hysteresis_framesync_preinit,
- .priv_size = sizeof(HysteresisContext),
- .uninit = uninit,
- .query_formats = query_formats,
- .activate = activate,
- .inputs = hysteresis_inputs,
- .outputs = hysteresis_outputs,
- .priv_class = &hysteresis_class,
- .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
- };
|